Get free shipping and sales for the Thorlos Coolmax Light Hiker Crew 3-Pair Pack Walnut/Heather Hosiery Light Hiking Protection Level 2 , Wool/Silk all weather product that is designed for use on day hikes on flat and varied terrain. Lightweight padding in the heel and ball protects the foot from shear and impact forces and helps prevent painful blistering. Lace pad protects the top of foot against boot lace pressure. Spandex and low density padding in the arch create a snug fit. Ventilation panel enhances wicking. 62% CoolMax , 19% THOR LON Acrylic, 14% Nylon, 5% Spandex. Sold as a 3 pair pack.